US20020016155A1 - Mobile telephone and method for the parametrization of the telephone - Google Patents

Mobile telephone and method for the parametrization of the telephone Download PDF

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Publication number
US20020016155A1
US20020016155A1 US09/859,220 US85922001A US2002016155A1 US 20020016155 A1 US20020016155 A1 US 20020016155A1 US 85922001 A US85922001 A US 85922001A US 2002016155 A1 US2002016155 A1 US 2002016155A1
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Prior art keywords
telephone
user
power
mobile telephone
brain
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Abandoned
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US09/859,220
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English (en)
Inventor
Philippe Charbonnier
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Sagem SA
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Sagem SA
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Assigned to SAGEM SA reassignment SAGEM SA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHARBONNIER, PHILIPPE
Publication of US20020016155A1 publication Critical patent/US20020016155A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/0857—Dosimetry, i.e. measuring the time integral of radiation intensity; Level warning devices for personal safety use

Definitions

  • An object of the invention is an improved mobile telephone and a method for the parametrization of this telephone.
  • the field of application is mobile telephony in both speech communications and data communications.
  • the aim of the invention is to improve the mobile telephone to ensure that the user will be able to use the telephone without any risk to his health.
  • This organization recommends a maximum SAR rate, not to be exceeded, of two watts per kilo if only the head is exposed to radiation, and a maximum SAR rate, not to be exceeded, of 0.08 watts per kilo if the entire body is exposed.
  • the six minutes' duration is related to the circulation of blood in the brain which acts like the fluid of a heat sink.
  • this problem is resolved by making a mobile telephone that evaluates the SAR rate of its user.
  • this approach enables the mobile telephone to control its use (or that of its accessories).
  • the mobile telephone limits its calls/or its transmission when a threshold has been reached.
  • the measurement will be preferably cumulative and performed on a sliding duration in time (for example a six-minute duration).
  • the emission power of the mobile telephone is normally remote-controlled by the network to optimize all the on-going calls of the cell in which the telephone is located. Since the emission levels of the telephone are calibrated and since the network dictates which level it should use, a mobile telephone permanently knows the power at which it is emitting. By calibration in working conditions, the manufacturer may correlate the power emitted with the power absorbed by the body or the brain, the brain being the part of the body most sensitive to radiation. He can thus set limits of emitted power that comply with the SAR limits. The telephone can thus compare its emission power (averaged over six minutes in a preferred embodiment) with said limits in taking account, in the preferred embodiment, of the proximity of the brain. He can also compare its emission power with the fixed limits in taking account of the frequency band considered. The result of this comparison determines the steps taken on the working at the telephone.
  • the invention therefore relates to a mobile telephone comprising means to know the proximity of the brain of a mobile telephone user and means to assess a dose of absorption of radiation that the mobile telephone produces in the user's biological tissues, under conditions of use, the assessment of the radiation dose taking account of the proximity or non-proximity of the user's brain.
  • the invention also relates to a method for the parameterization of a mobile telephone, wherein:
  • the emitted energy measurement is processed to make it representative of a dose received by the user
  • this processed measurement is compared with a threshold
  • a limitation of activity of the telephone is determined as a function of the result of the comparison.
  • FIG. 1 shows a mobile telephone according to the invention
  • FIG. 2 shows a preferred algorithm to manage the power absorbed by the user during a sliding six-minute period
  • FIG. 3 shows a preferred algorithm to compute the power absorbed during a three-second period.
  • FIG. 1 shows a mobile telephone 1 capable for example of setting up and managing a voice communication and a data communication simultaneously.
  • the mobile telephone 1 sends radioelectric waves to a base station 2 .
  • the base stations which are of the base station 2 type with which the mobile telephone 1 communicates, are controlled by a base station controller 3 , known as BSC.
  • BSC controller 3 sends information to a network 4 or a network 5 .
  • the network 4 for example deals with voice communications in a circuit mode and the network 5 for example manages data communications in a packet mode.
  • the user for example has connected his mobile telephone 1 to a computer 6 and is on the Internet. Programs consulted by the user on the Internet are hosted, for example, in a server computer 10 connected to the network 5 . While the user is on the Internet, a telephone call reaches him.
  • the telephone call may come either from a mobile telephone 7 or from a fixed telephone 8 .
  • the fixed telephone 8 is connected to a public switched telephone network 9 which is itself connected to the network 4 .
  • the radioelectric link between the network 4 and the mobile telephone 7 is set up by a base station 2 .
  • the mobile telephone 1 for example is of the two-watt GSM type. It can be remote-controlled at power values of 20 milliwatts to two watts in steps of two decibels.
  • a power control received by the telephone 1 at a periodicity of 60 milliseconds is conveyed by a channel known as SACCH and is processed by software programs of a general microprocessor 100 of the telephone 1 .
  • the mobile telephone can therefore know and memorize the values of power emitted by it, in the course of time, in a memory compartment.
  • a transceiver 101 of the mobile telephone 1 is connected to the microprocessor 100 by means of a bus 102 .
  • the network 4 or 5 sends the telephone 1 the value of the power at which it has to send, this information is received by the transceiver 101 which, according to the invention, transmits it to a data memory 103 by means of the bus 102 .
  • a piece of power control information is stored in a memory space 104 of the data memory 103 .
  • a program memory 105 of the mobile telephone 1 contains a program 106 managing the SAR rate of the telephone 1 . More generally, according to the invention, the program 106 manages the instantaneous or mean power sent out by the telephone 1 .
  • the program 106 especially has a first sub-program 107 that contains a preferred algorithm used to compute the power absorbed during a three-second period.
  • a second subprogram 108 is set up in the program 106 and contains a preferred algorithm to manage the power absorbed by the user over a six-minute period.
  • a third alarm sub-program 109 contained in the program 106 , sets up appropriate action if an alarm threshold S be crossed.
  • Data for the computation of the cumulative total power over a three-second period are stored in a memory space 110 of the data memory 103 and data for the algorithm for managing the absorbed power are stored in the memory space 1 1 1 of this memory 103 .
  • FIG. 2 shows a preferred algorithm to manage the power absorbed by the user during a sliding six-minute period.
  • an initial stage is defined during a step 200 : a value of absorbed power indexed by an index I, P(I), is zero whatever the value of I.
  • a total power value Pt is zero.
  • the index I is initially at zero.
  • the value P(I- 6 ) is the power value six minutes previously. It is zero when the algorithm is started, the step 200 being taken into account.
  • the power P(I) assumes a current power value.
  • the current power value P is preferably determined by means of an algorithm shown in FIG. 3 and set up during the three seconds of the test 201 .
  • the algorithm of FIG. 3 computes the cumulative total of the value of power P of a period over a period of three seconds. In this computation, and during a step 300 , the period power P and an incrementation index K are respectively initialized at zero.
  • a test 301 is implemented. This test 301 determines whether 60 milliseconds have elapsed. Should the test 301 be positive, the period power P measured is equal to a previously computed period power P incremented by a current power value Pc.
  • the current value Pc is the value of the power that has just been received from the base station as a power command and is memorized in the data memory 103 , preferably multiplied by a coefficient of use C.
  • the coefficient of use C equal to 1 if the instrument is close to the ear. It is negligible compared to 1 if the machine is far from the ear.
  • the current power value Pc can therefore be acquired in other ways, for example by measuring the current consumed by an output amplifier of the transceiver.
  • the preferred approach has the advantage of requiring no additional hardware construction for the mobile telephone.
  • K is incremented by one.
  • a test 304 is conducted to ascertain whether or not K is equal to 50 . Should K not be equal to 50 , the steps of the algorithm are recommenced from this test 301 . If not, during a step 305 , a three-second beep signal is produced. This signal comes into play in the algorithm of FIG. 2 at the same time as the value P(I) is available at the end of the period 1 , herein equal to three seconds.
  • a following step 204 of FIG. 2 is then used to compute the total cumulative power Pt.
  • the total cumulative power Pt is equal to the last value of the power Pt incremented by the value of the power P(I).
  • step 205 the index I module 120 is incremented by one.
  • the step 205 makes the program run circularly on 120 positions. Then a test 206 is performed.
  • step 207 If the threshold S has been reached or crossed, in a preferred example, an alarm is activated during a step 207 .
  • the sub-program 109 is also activated. There is then a return to the step 201 .
  • the threshold S is below the threshold S.
  • the limit s has no significance except when the SAR computed is supposed to be sensitive or even dangerous for the health of the user of the telephone 1 . Indeed, the interval characterized by the threshold S and threshold s defines a danger zone for the user. Thus, if the threshold s has been crossed, the alarm will not be turned off unless the total power Pt is below the threshold s.
  • the algorithm is used to set up a sliding mean.
  • the power Pt is a sliding total because the oldest value (P(I) before overwriting) is deducted from it and the most recent value (P(I) after overwriting) is added to it.
  • the threshold test is done permanently and the SAR can be displayed on the screen 112 of the telephone 1 . As an alternative, it may be simply specified whether the operation is in a state below or above the threshold S. The user can thus know the power that his head is supposed to be absorbing and can know if conditions favorable to his health are being met.
  • the mobile telephone 1 assesses an SAR as soon as at least one call has been set up and limits its operation when an alarm threshold S is reached.
  • the threshold S may be defined by a regulating authority.
  • the telephone 1 then totalizes the energy that it sends in taking account, in the preferred embodiment of the invention, of the proximity of the brain. Then it compares the energy emitted in a six-minute with the threshold S.
  • the mobile telephone 1 can find out if the brain is close to or distant from said telephone and especially from the antenna. It can know this directly for example by means of an acoustic, capacitive or infrared sensor located in the vicinity of the listening device and giving information on the distance between the user's head and this sensor.
  • the telephone 1 can also indirectly deduce the proximity of the user's head and therefore that of the user's brain.
  • This method of indirect deduction may be based on several indications. For example, since the microphone of the telephone is close to the earpiece, it can be assumed that, if the voice signal received by the telephone is strong, it means that the user is close to the microphone and therefore close to the earpiece. If, on the contrary, the received voice signal is weak, or if it has reverberations, then it means that the user is distant from the telephone and that he is using the hands-free function of the telephone. Another indication that can be used for indirect deduction may be the fact that the hands-free option is being activated or not.
  • This hands-free option may consist of the activation of a loudspeaker or a sensitive microphone or else of the connection of a hands-free headset kit consisting of a headphone with microphone and earpiece.
  • the antenna of the telephone is distant from the user's head.
  • the hands-free option comprise a loudspeaker with a modifiable volume
  • Another indication may be obtained by looking at whether the keypad cover flap is open in a support position on the table. If this is the case, it can be deduced there from that the telephone is placed on the table and that, consequently, the antenna is at a distance from the user's head.
  • the first method totalizes the energy emitted over a sliding six-minute period when the instrument is near the brain. When a limit L 1 is reached, it is considered that the borderline SAR has been reached for the brain and appropriate steps are taken. A second method totalizes the energy emitted over six minutes whether the instrument is near or far from the brain. When a limit L 2 is reached, it is assumed that the borderline SAR for the entire body (which is another rate different from the rate for the head) has been reached, and appropriate steps are taken.
  • a warning to the user who stays in control of his fate may be for example a warning in the form of sound.
  • the warning may also take the form of an intermittent broadcasting of speech and/or data transmissions for a specified period,
  • the telephone 1 by itself reduces its GPRS transmission bit rate. Indeed, in GPRS technology, which is a packet technology, it is quite natural for the sender (in this case the mobile phone) to have control over the instants of the sending of its successive packets. The telephone can thus space out its packets so as to dilute its emitted energy in time. It can also make arrangements with the network to reduce the number of TDMA windows used.
  • instantaneous power will be a mean power on a short time scale, for example over one second or again on the scale of the TDMA frame.
  • the telephone 1 compares the instantaneous power that it emits with a threshold (in taking or not taking account of the proximity of the head).
  • the telephone 1 modifies its operation on the basis of this comparison.
  • This power threshold is chosen so that the statutory quantity (SAR) is definitely complied with when it is not known whether or not the instantaneous power will be maintained for a long time.
  • the power threshold is taken to be equal to 1 / 360 of the transmitted energy supposed to correspond to the statutory absorbed energy.
  • the mobile telephone 1 assesses the power or energy emitted: it is correlated with the SAR absorbed by humans through laboratory studies by the manufacturer and it is correlated with thresholds in the same way.
  • the invention can be used not only to determine the electrical magnitudes needed to estimate the quantity of radiation received by the user but also to convert these electrical magnitudes into biological criteria related to natural human capacities.
  • the choice of the size of the sliding window takes account of the behavior of the head in absorption, especially that of the capacity of the blood to discharge the calories brought to the brain by the radiation emitted by the mobile telephone antenna.
  • the correspondence between electrical magnitudes and biological criteria has been calibrated in the stage of designing the instrument. In the software of the instrument, this correspondence takes the form of the practical thresholds to be used.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)
US09/859,220 2000-05-17 2001-05-16 Mobile telephone and method for the parametrization of the telephone Abandoned US20020016155A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0006482A FR2809274B1 (fr) 2000-05-17 2000-05-17 Telephone mobile perfectionne et procede de parametrage du telephone
FR0006482 2000-05-17

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EP (1) EP1156591A1 (fr)
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Cited By (28)

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US20050075123A1 (en) * 2003-10-06 2005-04-07 Research In Motion Limited System and method of controlling transmit power for mobile wireless devices with multi-mode operation of antenna
US20050113125A1 (en) * 2003-09-25 2005-05-26 Wan-Gyu Kang Mobile communication terminal and method of using the same
US20070111681A1 (en) * 2005-11-14 2007-05-17 Alberth William P Jr Transmit power allocation in wireless communication devices
US20080130728A1 (en) * 2006-11-30 2008-06-05 Motorola, Inc. Monitoring and control of transmit power in a multi-modem wireless communication device
US20080146268A1 (en) * 2006-12-14 2008-06-19 Motorola, Inc. Multimodal phone data session management enhancement that alleviates dual transmission problems
US20080220831A1 (en) * 2007-03-06 2008-09-11 Motorola, Inc. Earmounted electronic device and method
US20100203862A1 (en) * 2009-02-09 2010-08-12 Friedlander Gil Method and a system for controlling and tracking radiation emitted from mobile phones
US20100251190A1 (en) * 2009-03-31 2010-09-30 Fujitsu Limited Semiconductor substrate wiring design support device and control method thereof
US20100295738A1 (en) * 2009-05-19 2010-11-25 Motorola, Inc. Hands Free Cellular Communication Device Having a Deployable Antenna
CN102215555A (zh) * 2010-04-02 2011-10-12 Lg电子株式会社 发送信号的用户设备装置和控制其传输功率的方法
US20110309945A1 (en) * 2010-06-18 2011-12-22 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Irradiation self-protection from user telecommunication device
US20120015697A1 (en) * 2010-07-16 2012-01-19 Research In Motion Limited Speaker Phone Mode Operation of a Mobile Device
US20120071195A1 (en) * 2010-09-21 2012-03-22 Broadcom Corporation Transmit Power Management for Specific Absorption Rates
US20130045697A1 (en) * 2010-05-12 2013-02-21 Zte Corporation Method, control apparatus and wireless terminal for reducing radiation harm of wireless terminal
US8462002B2 (en) 2010-06-18 2013-06-11 The Invention Science Fund I, Llc Personal telecommunication device with target-based exposure control
US8519856B2 (en) 2010-06-18 2013-08-27 The Invention Science Fund I, Llc Mapping system for irradiation protection
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WO2015124744A1 (fr) * 2014-02-21 2015-08-27 Trust Battery Ireland Limited Enregistrement de rayonnement nuisible potentiel
US20160072538A1 (en) * 2014-09-10 2016-03-10 Cellraid Ltd Determining and controlling radiation absorption
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CN109239471A (zh) * 2018-10-31 2019-01-18 北京小米移动软件有限公司 电磁辐射量超标处理方法及装置
EP2814292B1 (fr) * 2013-06-13 2019-05-08 BlackBerry Limited Procédé et dispositif pour la régulation dynamique de la puissance RF d'emission
US20200091950A1 (en) * 2016-12-14 2020-03-19 Trust Technology World Dmcc Telephone handset containing a remedial device

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US7146139B2 (en) * 2001-09-28 2006-12-05 Siemens Communications, Inc. System and method for reducing SAR values
FR2858901B1 (fr) * 2003-08-12 2005-12-09 Bouygues Telecom Sa Dispositif de determination des variations du das d'un mobile en communication
FR2910755A1 (fr) * 2006-12-26 2008-06-27 France Telecom Dispositif et procede d'evaluation du niveau d'exposition aux champs electromagnetiques induits par un terminal de telecommunication mobile connecte a un reseau radio mobile
FR2939262B1 (fr) * 2008-11-28 2013-02-22 Victor Marsal Ce dispositif permet a l'utilisateur d'un radio-telephone de connaitre et controler son exposition aux radiations electromagnetiques emises par son mobile et d'en limiter le volume au niveau qu'il aura prealablement fixe

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US20050113125A1 (en) * 2003-09-25 2005-05-26 Wan-Gyu Kang Mobile communication terminal and method of using the same
US8023984B2 (en) * 2003-10-06 2011-09-20 Research In Motion Limited System and method of controlling transmit power for mobile wireless devices with multi-mode operation of antenna
EP1524774A1 (fr) * 2003-10-06 2005-04-20 Research In Motion Limited Système et procédé de commande de puissance d'émission pour un appareil mobile multimode
US20130012183A1 (en) * 2003-10-06 2013-01-10 Research In Motion Limited System and method of controlling transmit power for mobile wireless devices with multi-mode operation of antenna
US20050075123A1 (en) * 2003-10-06 2005-04-07 Research In Motion Limited System and method of controlling transmit power for mobile wireless devices with multi-mode operation of antenna
US20070111681A1 (en) * 2005-11-14 2007-05-17 Alberth William P Jr Transmit power allocation in wireless communication devices
US8665779B2 (en) 2006-11-30 2014-03-04 Motorola Mobility Llc Monitoring and control of transmit power in a multi-modem wireless communication device
US20080130728A1 (en) * 2006-11-30 2008-06-05 Motorola, Inc. Monitoring and control of transmit power in a multi-modem wireless communication device
US8665778B2 (en) 2006-11-30 2014-03-04 Motorola Mobility Llc Monitoring and control of transmit power in a multi-modem wireless communication device
US20080146268A1 (en) * 2006-12-14 2008-06-19 Motorola, Inc. Multimodal phone data session management enhancement that alleviates dual transmission problems
US8744519B2 (en) 2006-12-14 2014-06-03 Motorola Mobility Llc Multimodal phone data session management enhancement that alleviates dual transmission problems
US7805171B2 (en) 2007-03-06 2010-09-28 Motorola Mobility, Inc. Earmounted electronic device and method
US20080220831A1 (en) * 2007-03-06 2008-09-11 Motorola, Inc. Earmounted electronic device and method
US20100203862A1 (en) * 2009-02-09 2010-08-12 Friedlander Gil Method and a system for controlling and tracking radiation emitted from mobile phones
US20100251190A1 (en) * 2009-03-31 2010-09-30 Fujitsu Limited Semiconductor substrate wiring design support device and control method thereof
US20100295738A1 (en) * 2009-05-19 2010-11-25 Motorola, Inc. Hands Free Cellular Communication Device Having a Deployable Antenna
US8159402B2 (en) 2009-05-19 2012-04-17 Motorola Mobility, Inc. Hands free cellular communication device having a deployable antenna
US8934937B1 (en) 2010-01-22 2015-01-13 Amazon Technologies, Inc. Using sensors to trigger transmit power management
US8965441B1 (en) 2010-01-22 2015-02-24 Amazon Technologies, Inc. Reducing wireless interference with transmit power level management
US9295004B2 (en) 2010-01-22 2016-03-22 Amazon Technologies, Inc. Duty cycling to reduce average transmit power
US8792930B1 (en) * 2010-01-22 2014-07-29 Amazon Technologies, Inc. Power management for wireless transmissions
US9307499B2 (en) 2010-01-22 2016-04-05 Amazon Technologies, Inc. Using sensors to trigger transmit power management
US8509838B2 (en) 2010-04-02 2013-08-13 Lg Electronics Inc. User equipment apparatus for simultaneously transmitting signals via a plurality of wireless communication chips to which different wireless communication schemes are applied and method for controlling transmission power thereof
CN102215555A (zh) * 2010-04-02 2011-10-12 Lg电子株式会社 发送信号的用户设备装置和控制其传输功率的方法
US20130045697A1 (en) * 2010-05-12 2013-02-21 Zte Corporation Method, control apparatus and wireless terminal for reducing radiation harm of wireless terminal
US20110309945A1 (en) * 2010-06-18 2011-12-22 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Irradiation self-protection from user telecommunication device
US8810425B2 (en) 2010-06-18 2014-08-19 The Invention Science Fund I, Llc Travel route mapping based on radiation exposure risks
US8519856B2 (en) 2010-06-18 2013-08-27 The Invention Science Fund I, Llc Mapping system for irradiation protection
US8686865B2 (en) 2010-06-18 2014-04-01 The Invention Science Fund I, Llc Interactive technique to reduce irradiation from external source
US8463288B2 (en) * 2010-06-18 2013-06-11 The Invention Science Fund I, Llc Irradiation self-protection from user telecommunication device
US8462002B2 (en) 2010-06-18 2013-06-11 The Invention Science Fund I, Llc Personal telecommunication device with target-based exposure control
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FR2809274A1 (fr) 2001-11-23
FR2809274B1 (fr) 2002-10-11

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